The body louse
genome is the smallest known genome of any insect, according to University of Illinois entomology professor Barry Pittendrigh, who led the drive to fund the project and coordinated the international team of scientists who analysed the sequence.
An experimental model of human body louse
infection with Rickettsia typhi.
Association of body louse
infestation and explanatory variables in a homeless population surveyed during 2008-2010 and 2012, San Francisco, California, USA Variable No.
quintana has been detected in head louse specimens collected in Ethiopia and Senegal (5-7) and in body louse
specimens collected in Burundi, Rwanda, Zimbabwe (8), and Ethiopia (3); we add Democratic Republic of the Congo to the list.
These authors demonstrated that the body louse
could be infected when living on a septicemic patient, could stay alive for 7 days with infectious feces, and could transmit plague (9).
The human body louse
is currently thought to play a role in the transmission of B.
Epidemiologic studies of homeless populations have reported the following prevalence rates for infectious diseases: 6.2%-35% for HIV infection (6,9-13), 17%-30% for hepatitis B virus (HBV) infection (9,10), 12%-30% for hepatitis C virus (HCV) infection (9,10), 1.2%-6.8% for active tuberculosis (TB) (3,4), 3.8%-56% for scabies (11,12), 7%-22% for body louse
infestation (5,11,13,14), and 2%-30% for Bartonella quintana infection (5,15), which is the most common louse-borne disease in urban homeless.
The role of the human body louse
in the transmission of relapsing fever was reported by MacKie in 1907 (1).
Rickettsia prowazekii is the causative agent of epidemic for louseborne typhus, which is transmitted by the human body louse
. This disease can be fatal and, without treatment with doxycycline, will cause death in up to 30% of cases (1-3).
Humans are the reservoir of the bacterium (12), and the human body louse
, Pediculus humanus corporis, is its usual vector (1).
quintana and that the human body louse
is the vector (1).
The [alpha]-proteobacterium Bartonella quintana is a fastidious, gram-negative organism; humans are the only known reservoir, and the human body louse
, Pediculus humanus corporis, is the only known vector (1).